Redmine	対応Rubyバージョン
5.1.0	2.7, 3.0, 3.1, 3.2
5.0.0	2.5, 2.6, 2.7, 3.0, 3.1
4.2.0	2.4, 2.5, 2.6, 2.7.2以降(2.7.0, 2.7.1は非対応)
4.1.0	2.3, 2.4, 2.5, 2.6
4.0.1	2.2.2, 2.3, 2.4, 2.5, 2.6
4.0.0	2.2.2, 2.3, 2.4, 2.5
3.3.0	1.9.2, 1.9.3, 2.0, 2.1, 2.2, 2.3, 2.4
3.3.0	1.9.2, 1.9.3, 2.0, 2.1, 2.2, 2.3
3.0.0	1.9.2, 1.9.3, 2.0, 2.1, 2.2
2.5.2	1.8.7, 1.9.2, 1.9.3, 2.0, 2.1
2.3.0	1.8.7, 1.9.2, 1.9.3, 2.0.0
1.4.0	1.8.7, 1.9.3, 1.9.2
0.9.0	1.8.6, 1.8.7

関連チケット

• Feature #38134: Drop Ruby 2.6 support
• Feature #38099: Add Ruby 3.2 support
• Feature #37159: Drop Ruby 2.5 support
• Feature #36205: Ruby 3.1 support
• Feature #34992: Ruby 3.0 support
• Feature #31128: Drop Ruby < 2.5 support
• Feature #34142: Drop Ruby 2.3 support
• Feature #31500: Ruby 2.7 support
• Feature #30356: Drop Ruby 2.2 support
• Feature #30118: Ruby 2.6 support
• Feature #27849: Ruby 2.5 support
• Feature #25538: Drop support for Ruby 2.2.1 and ealier, 2.2.2+ is now required
• Feature #25048: Ruby 2.4 support
• Feature #22987: Ruby 2.3 support
• Feature #18947: Ruby 2.2 support
• Feature #16194: Ruby 2.1 support
• Feature #13329: Ruby 2.0 support
• Feature #4050: Ruby 1.9 support